12219370438 has 8 divisors (see below), whose sum is σ = 19995333480. Its totient is φ = 5554259280.

The previous prime is 12219370403. The next prime is 12219370451. The reversal of 12219370438 is 83407391221.

12219370438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12219370438.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277712943 + ... + 277712986.

It is an arithmetic number, because the mean of its divisors is an integer number (2499416685).

Almost surely, 2^12219370438 is an apocalyptic number.

12219370438 is a deficient number, since it is larger than the sum of its proper divisors (7775963042).

12219370438 is a wasteful number, since it uses less digits than its factorization.

12219370438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555425942.

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 12219370438 in words is "twelve billion, two hundred nineteen million, three hundred seventy thousand, four hundred thirty-eight".